PP/Transportation/AddExecutor.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace Transportation
{
    public partial class AddExecutor : Form
    {
        SqlCommand query = null;
        
        public AddExecutor()
        {
            InitializeComponent();
        }

        private void AddBTN_Click(object sender, EventArgs e)
        {
            query = new SqlCommand("insert into executors (surname_executor, name_executor, midname_executor) values (@surname_executor, @name_executor, @midname_executor)", dbhelper.sqlConnection);
            query.Parameters.AddWithValue("surname_executor", SurnameExecutorTB.Text);
            query.Parameters.AddWithValue("name_executor", NameExecutorTB.Text);
            query.Parameters.AddWithValue("midname_executor", MidnameExecutorTB.Text);

            if (query.ExecuteNonQuery().ToString().Equals("1"))
            {
                MessageBox.Show("Добавление прошло успешно!", "Уведомление", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.Close();
            }
        }
    }
}